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    <script type="text/javascript">
        function createStudent(name) {
            var student = new Object();
            student.name = name;
            //第一个name指的是student对象定义的变量。
            //第二个name指的是createStudent函数的参数。
            //二者不一样
        }

        function Student(name) {
            this.name = name;
        }
    </script>
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